Audio output apparatus capable of outputting multi channel audio and display apparatus applying the same

ABSTRACT

A display apparatus includes a display device configured to display a video data; and a plurality of integrated speakers configured to output at least one audio signal in a low-pitched tone band and at least one audio signal in a middle and high-pitched tone band. The plurality of integrated speakers may each include: a woofer speaker configured to output a first audio signal among the at least one audio signal in the low-pitched tone band; and at least one front speaker that is adjacent to the woofer speaker and configured to output a second audio signal among the at least one audio signal in the middle and high-pitched tone band.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a National Stage Entry of International ApplicationNo. PCT/KR2014/006054, filed on Jul. 7, 2014, in the Korean IntellectualProperty Office, which claims priority from U.S. Provisional ApplicationNo. 61/843,118, filed on Jul. 5, 2013, in the U.S. Patent and TrademarkOffice, and Korean Patent Application No. 10-2014-0069427, filed on Jun.9, 2014, in the Korean Intellectual Property Office, the disclosures ofwhich are incorporated herein by reference in their entireties.

BACKGROUND

1. Field

Apparatuses and methods consistent with exemplary embodiments relate toan audio output apparatus and a display apparatus applying the audiooutput apparatus, and more particularly, to an audio output apparatuscapable of outputting multi-channel audio and a display apparatusapplying the same.

2. Description of the Related Art

Due to advancements in flat display panel technology, housing fordisplay apparatuses, such as digital televisions (TVs), is gettingslimmer. As display apparatuses become slimmer, various componentsconfiguring display apparatuses have been developed for the slimmeddisplay apparatus. When display apparatuses become slimmer, an internalspace of the speaker for outputting audio to a front surface of thedisplay apparatus narrows. According to a related art display apparatus,audio is output through a speaker mounted in the display apparatus usinga down-firing scheme and a back-firing scheme. A woofer speakeroutputting audio in a low-pitched tone band is formed on a back surfaceof the display apparatus and each of the front speakers outputting audioin a middle-pitched and high-pitched tone band corresponding to a leftchannel and a right channel is formed at the left and right of a lowerarea of the display apparatus, respectively. Accordingly, the audiosignal output through the woofer speaker is fired through the backsurface of the display apparatus and the fired audio signal isdiffracted by a back wall and a side wall adjacent to the displayapparatus and transferred to the front surface of the display apparatus.Further, the audio signals output through each of the front speakers arefired through a lower surface of the display apparatus and the firedaudio signals are diffracted and reflected by the lower surface adjacentto the display apparatus and transferred to the front surface of thedisplay apparatus.

Therefore, a user in front of the display apparatus may listen to theaudio output through the woofer speaker and the front speaker.

However, the related art method for outputting audio has disadvantages.

Because the woofer speaker and the front speaker output audio signals indifferent directions, a difference between a transfer distance of theaudio signal output from the woofer speaker to the front surface of thedisplay apparatus and a transfer distance of the audio signal outputfrom the front speaker to the front surface of the display apparatus mayoccur. Therefore, a phase change in a crossover band in which the audiosignals are commonly output in the low-pitched tone band and the middleand high-pitched tone band occurs in an area out of a position which isset in consideration of the distance difference. Therefore, when theuser is positioned in the area in which the phase change in thecrossover band occurs, the user may experience decreased sound qualitywhen listening to low-quality audio in a section corresponding to thecrossover band.

A phase difference between direct sound fired through the woofer speakerand sound reflected from the back wall may occur according to a distancedegree between the display apparatus and the back wall. As describedabove, when the phase difference between the direct sound and thereflected sound occurs, a section in which a specific band needs to beoffset and reinforced is changed. Thus, the audio signal in the desiredlow-pitched tone band may not be generated.

The related art woofer speaker may use a bass reflex enclosure or ventedenclosure, to which a Helmholtz resonance scheme is applied, to be ableto output the audio signal in which the low-pitched tone band is morereinforced than the related art woofer speaker. That is, the related artwoofer speaker synthesizes front sound generated from a woofer unit andback sound reproduced in back of the woofer unit with duct soundamplified by the Helmholtz resonance to be able to output the audiosignal in which the low-pitched tone band is reinforced. However, unlikethe front sound fired by the back-firing scheme, the duct sound isattenuated by an internal structure configuring the display apparatusand emitted from a clearance of the housing, such that the duct sound ispartially lost while being synthesized with the front sound. Therefore,the synthesized sound of the duct sound with the front sound may have alow band loss or noise.

FIG. 1 is a diagram of an operation of outputting an audio signalthrough a speaker mounted in a related art display apparatus.

As illustrated in FIG. 1, a display apparatus 10 includes a wooferspeaker 20 and front speakers 30 a and 30 b. The woofer speaker 20 is aspeaker which is mounted on one side of a back surface of the displayapparatus 10 to output an audio signal in a low-pitched tone bandapplied from the outside. The woofer speaker 20 may include a wooferdevice 21 which generates acoustic oscillation in connection with theaudio signal in the low-pitched tone band which is applied from theoutside. Therefore, the woofer speaker 20 fires front sound for theacoustic oscillation generated by the woofer device 21 by a back-firingscheme to output the audio signal in the low-pitched tone band which isapplied from the outside. Therefore, the audio signal in the low-pitchedtone band output through the woofer speaker 20 is diffracted by a backwall surface adjacent to the display apparatus 10 or the back wallsurface and a side wall surface and transferred to a front surface ofthe display apparatus 10.

Further, the front speakers 30 a and 30 b are speakers which are eachmounted on both sides of a lower surface of the display apparatus 10 tooutput an audio signal in a middle and high-pitched tone band which isapplied from the outside. The front speaker (hereinafter, referred to asa first front speaker) 30 a is mounted in a left area of the lowersurface of the display apparatus 10 to output a left audio signal in amiddle and high-pitched tone band. The other front speaker (hereinafter,referred to as a second front speaker) 30 b is mounted in a right areaof the lower surface of the display apparatus 10 to output a right audiosignal in a middle and high-pitched tone band. As such, the first andsecond front speakers 30 a and 30 b, which are mounted at the left andright of the lower surface of the display apparatus 10, output the leftand right audio signals in the middle and high-pitched tone band by adown-firing scheme. Therefore, the left and right audio signals in themiddle and high-pitched tone band output through the first and secondfront speakers 30 a and 30 b are each diffracted by the lower surfaceadjacent to the display apparatus 10 and transferred to the frontsurface of the display apparatus 10.

As such, the display apparatus 10 outputs the audio signals in thelow-pitched tone band and the middle and high-pitched tone band throughthe woofer speaker 20 and the first and second front speakers 30 a and30 b. Therefore, a user may enjoy high-quality audio sound. However, theaudio signals in the low-pitched tone band and the middle andhigh-pitched tone band output through the woofer speaker 20 and thefirst and second front speakers 30 a and 30 b in the display apparatus10 have a phase difference in a specific band according to a listeningposition of the user. Thus, a sound quality of audio in the specificband may deteriorate.

As described above, the woofer speaker 20 is mounted on one side of theback surface of the display apparatus 10 to output the audio signal bythe back-firing scheme and the first and second front speakers 30 a and30 b are each mounted in the left and right areas of the lower surfaceof the display apparatus 10 to output the audio signal by thedown-firing scheme. Therefore, a distance difference may occur between atransfer distance of the audio signal output from the woofer speaker 20to the front surface of the display apparatus 10 and a transfer distanceof the audio signals output from the first and second front speakers 30a and 30 b to the front surface of the display apparatus 10. A frequencyresponse in the specific band may be changed according to the listeningposition of the user due to the distance difference. Here, the specificband is a section in which the audio signals are commonly output in thelow-pitched tone band and the middle and high-pitched tone band. Thespecific band in which the audio signals are commonly output in thelow-pitched tone band and the middle and high-pitched tone band isreferred to as a crossover (X-over) band. For example, when a phasedifference of both ends of the X-band is set to be 0 degrees, thecorresponding band is filled due to constructive interference. Further,when the phase difference of both ends of the X-band is set to be 180degrees, the corresponding band has a deep dip due to destructiveinterference. The related display apparatus 10 is subjected toparametric equalizer (PEQ) tuning so that the phase difference of thesection in which the X-band in a band between the woofer speaker 20 andthe first and second front speakers 30 a and 30 b based on a center of ascreen is set to be 0 degrees. However, in the case of tuning thedisplay apparatus 10 by the related art scheme, when the listeningposition of the user is at the left or right of the display apparatus10, a phase change of the X-band occurs. Thus, the user at the left orright of the display apparatus 10 has decreased sound quality whenlistening to low-quality audio in the section corresponding to theX-band.

Further, the audio signal in the low-pitched tone band output throughthe woofer speaker 20 in the display apparatus 10 is transferred to thefront surface of the display apparatus 10, while being diffracted bysynthesis of direct sound fired through the woofer speaker 20 with soundreflected by a back wall. In this case, a phase difference between thedirect sound fired through the woofer speaker 20 and the sound reflectedfrom the back wall may occur according to a distance degree between thedisplay apparatus 10 and the back wall. When the phase differencebetween the direct sound and the reflected sound occurs, the section inwhich the specific band needs to be offset and reinforced is changed.Thus, the desired audio signal in the low-pitched tone band may not begenerated.

FIG. 2 is another diagram of the operation of outputting the audiosignal through the speaker mounted in a related art display apparatus.

As illustrated in FIG. 2, the display apparatus 10 includes the wooferspeaker 20 and the first and second front speakers 30 a and 30 b. Asdescribed above, the front speaker 30 a is mounted in the left area ofthe lower surface of the display apparatus 10 to output the left audiosignal in the middle and high-pitched tone band and the second frontspeaker 30 b is mounted in the right area of the lower surface of thedisplay apparatus 10 to output the right audio signal in the middle andhigh-pitched tone band. As such, the first and second front speakers 30a and 30 b, which are mounted at the left and right of the lower surfaceof the display apparatus 10, output the left and right audio signals inthe middle and high-pitched tone band by the down-firing scheme.Therefore, the left and right audio signals in the middle andhigh-pitched tone band output through the first and second frontspeakers 30 a and 30 b are each diffracted by the lower surface adjacentto the display apparatus 10 and transferred to the front surface of thedisplay apparatus 10.

Further, the woofer speaker 20 is a speaker which is mounted on one sideof the back surface of the display apparatus 10 to output the audiosignal in the low-pitched tone band applied from the outside. In thiscase, the woofer speaker 20 may output the audio signal in which thelow-pitched tone band is more reinforced than the woofer speaker 20described with reference to FIG. 1 using the Helmholtz resonance scheme.To this end, the woofer speaker 20 may include the woofer device 21 anda duct 23. The woofer device 21 generates the acoustic oscillation inconnection with the audio signal in the low-pitched tone band which isapplied from the outside. Further, the duct 23 again inverts back soundhaving an antiphase reproduced in back of the woofer device 21 as muchas 180 degrees in a band which is equal to or more than a resonancefrequency to fire duct sound in which the low-pitched tone band isreinforced.

Therefore, the woofer speaker 20 fires the synthesized sound of thefront sound for the acoustic oscillation generated from the wooferdevice 21 with duct sound fired from the duct 23 by the back-firingscheme to be able to output the audio signal in which the low-pitchedtone band is reinforced.

The duct sound synthesized with the front sound for the acousticoscillation generated from the woofer device 21 is not synthesized withthe front sound through a separate path but is emitted between aclearance of the housing configuring the display apparatus 10 andsynthesized with the front sound. Therefore, the duct sound is partiallylost while being synthesized with the front sound. Thus, a low band lossand noise of the audio signal output through the woofer speaker 20 maybe generated.

SUMMARY

Exemplary embodiments may overcome the above disadvantages and otherdisadvantages not described above. Also, the exemplary embodiments arenot required to overcome the disadvantages described above, and anexemplary embodiment may not overcome any of the problems describedabove.

Further, one or more exemplary embodiments may output multi-channelaudio through a single speaker applied to a display apparatus.

According to an aspect of an exemplary embodiment, a display apparatusincludes: a display device configured to display video data; and aplurality of integrated speakers configured to output at least one audiosignal in a low-pitched tone band and at least one audio signal in amiddle and high-pitched tone band, in which each integrated speakeramong the plurality of integrated speakers may include: a woofer speakerconfigured to output a first audio signal among the at least one audiosignal in the low-pitched tone band; and at least one front speaker thatis adjacent to the woofer speaker and is configured to output a secondaudio signal among the at least one audio signal in the middle andhigh-pitched tone band.

The plurality of integrated speakers may be disposed in an end area ofthe display apparatus and the first audio signal and the second audiosignal may be directed downward.

A first front speaker included in a first integrated speaker among theplurality of integrated speakers may be configured to output a leftaudio signal of a left channel as the second audio signal, and a secondfront speaker included in a second integrated speaker among theplurality of integrated speakers may be configured to output a rightaudio signal of a right channel as the second audio signal.

The woofer speaker may include a first woofer speaker and a secondwoofer speaker and each of the first woofer speaker and the secondwoofer speaker may be configured to output a same audio signal as thefirst audio signal in the low-pitched tone band.

The first woofer speaker and the second woofer speaker may each include:a woofer device configured to output woofer sound for the same audiosignal in the low-pitched tone band; and a duct configured to resonatean acoustic of the woofer sound output from the woofer device to amplifythe low-pitched tone band of the same audio signal, and the wooferdevice and the duct may each be disposed in a band pass enclosure or avented enclosure.

The first and second woofer speakers may each include: a woofer deviceconfigured to output woofer sound for the same audio signal in thelow-pitched tone band; and a diaphragm configured to resonate avibration of the woofer sound output from the woofer device to amplifythe low-pitched tone band of the same audio signal, and the wooferdevice and the diaphragm may each be disposed in a passive radiatorenclosure of a band pass type or a passive radiator enclosure of avented type.

The first front speaker and the second front speaker may be disposed inseparately sealed enclosures.

The first front speaker and the second front speaker may each bedisposed in a vented enclosure that resonates an acoustic of the secondoutput audio signal in the middle and high-pitched tone band to amplifythe low-pitched tone band of the first audio signal.

Each of the first front speaker and the second front speaker may bedisposed in a passive radiator enclosure that resonates a vibration ofthe second output audio signal in the middle and high-pitched tone bandto amplify the low-pitched tone band of the first audio signal.

The first integrated speaker and the second integrated speaker may eachfurther include at least one tweeter that is adjacent to the first frontspeaker and the second front speaker to output the second audio signalin the middle and high-pitched tone band in a same output direction asan output direction of the left audio signal and the right audio signal.

According to an aspect of another exemplary embodiment, a displayapparatus includes: a display device configured to display a video data;and an integrated speaker configured to output at least one audio signalin a low-pitched tone band and at least one audio signal in a middle andhigh-pitched tone band, in which the integrated speaker may include: awoofer speaker configured to output a first audio signal among the atleast one audio signal in the low-pitched tone band; and at least onefront speaker that is adjacent to the woofer speaker and configured tooutput a second audio signal among the at least one audio signal in themiddle and high-pitched tone band.

The integrated speaker may be disposed in an end area of the displayapparatus, and the first audio signal and the second audio signal, whichmay be respectively output from the woofer speaker and the at least onefront speaker, may be directed downward.

The integrated speaker may include: a first front speaker among the atleast one front speaker configured to output a left audio signal of aleft channel as the second audio signal; and a second front speakeramong the at least one front speaker configured to output a right audiosignal of a right channel as the second audio signal, and the wooferspeaker may be disposed between the first front speaker and the secondfront speaker.

The woofer speaker may include: a woofer device configured to outputwoofer sound for a same audio signal as the first audio signal in thelow-pitched tone band; and a duct configured to resonate an acoustic ofthe woofer sound output from the woofer device to amplify thelow-pitched tone band of the same audio signal, and the woofer deviceand the duct may each be disposed in a band pass enclosure or a ventedenclosure.

The woofer speaker may include: a woofer device configured to outputwoofer sound for a same audio signal in the low-pitched tone band; and adiaphragm configured to resonate a vibration of the woofer sound outputfrom the woofer device to amplify the low-pitched tone band of the sameaudio signal, and the woofer device and the diaphragm may each bedisposed in a passive radiator enclosure of a band pass type or apassive radiator enclosure of a vented type.

Additional and/or other aspects of exemplary embodiments will be setforth in part in the description which follows and, in part, will beapparent from the description, or may be learned by practice of theexemplary embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or other aspects will be more apparent by describingexemplary embodiments with reference to the accompanying drawings, inwhich:

FIG. 1 is a diagram of an operation of outputting an audio signalthrough a speaker mounted in a related art display apparatus;

FIG. 2 is a diagram of the operation of outputting the audio signalthrough the speaker mounted in a related art display apparatus;

FIG. 3 is a block diagram of a display apparatus according to anexemplary embodiment;

FIG. 4 is a diagram of an operation of firing audio signals in alow-pitched tone band and a middle and high-pitched tone band through aplurality of integrated speakers in the display apparatus according toan exemplary embodiment;

FIGS. 5A and 5B are diagrams illustrating an output direction of theaudio signal output through the integrated speaker in the displayapparatus according to an exemplary embodiment;

FIG. 6 is a perspective view of the integrated speaker according to anexemplary embodiment;

FIG. 7 is a diagram of a woofer speaker to which a band pass enclosureis applied, in the integrated speaker according to an exemplaryembodiment;

FIG. 8 is a diagram of a woofer speaker to which a passive radiatorenclosure of a band pass type is applied, in the integrated speakeraccording to another exemplary embodiment;

FIG. 9 is a diagram of a woofer speaker to which a vented enclosure isapplied, in the integrated speaker according to an exemplary embodiment;

FIG. 10 is a diagram of the woofer speaker to which the passive radiatorenclosure of a vented type is applied, in the integrated speakeraccording to another exemplary embodiment;

FIG. 11 is a diagram of a front speaker to which a sealed enclosure isapplied, in the integrated speaker according to an exemplary embodiment;

FIG. 12 is a diagram of the front speaker through which the audio signalin a middle and high-pitched tone band expanded from a low-pitched toneband is output, by applying the vented enclosure in the integratedspeaker according to an exemplary embodiment;

FIG. 13 is a diagram of the front speaker through which the audio signalin the middle and high-pitched tone band expanded from the low-pitchedtone band is output, by applying the passive radiator enclosure of thevented type in the integrated speaker according to another exemplaryembodiment;

FIG. 14 is a diagram of the front speaker through which the audio signalin the middle and high-pitched tone band expanded from the high-pitchedtone band is output, in the integrated speaker according to an exemplaryembodiment;

FIG. 15 is a diagram of the front speaker through which the audiosignals in the low-pitched tone band to the high-pitched tone band areoutput, in the integrated speaker according to an exemplary embodiment;

FIG. 16 is a diagram of the front speaker through which the audiosignals in the low-pitched tone band to the high-pitched tone band areoutput, by applying the passive radiator enclosure of the vented type inthe integrated speaker according to another exemplary embodiment;

FIG. 17 is a diagram of the integrated speaker through which the audiosignals in the middle and low-pitched tone band and the low-pitched toneband corresponding to a left channel and a right channel are output, inthe display apparatus according to an exemplary embodiment; and

FIG. 18 is a diagram of the integrated speaker through which the audiosignals in the middle and low-pitched tone band and the low-pitched toneband are output, in the display apparatus according to another exemplaryembodiment.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

Below, exemplary embodiments will be described in detail with referenceto the accompanying drawings.

A display apparatus 100 including an audio output apparatus whichoutputs audio in a low-pitched tone band and a middle and high-pitchedtone band according to an exemplary embodiment will be described below.

FIG. 3 is a block diagram of the display apparatus according to anexemplary embodiment.

As illustrated in FIG. 3, the display apparatus 100 may be a reproducingapparatus capable of outputting video and audio such as a smart TV, adigital TV, and a smart phone. The display apparatus 100 includes aninput device 110, a communicator 120, a signal processor 130, a displaydevice 150, an integrated speaker 160, and a controller 170. At leastone of the input device 110, the communicator 120, the signal processor130, the display device 150, the integrated speaker 160, and thecontroller 170 may include a processor, hardware module, or a circuitfor performing their respective functions.

The input device 110 receives a user command input from an input devicesuch as a control panel or a touch panel which is included in thedisplay apparatus 100, and transfers the received user command to thecontroller 170.

The communicator 120 may communicate with a contents server providingcontents including video data and audio data to receive contentsrequested by a user or may communicate with a remote control devicecontrolling the operation of the display apparatus 100 to receive theuser command.

The communicator 120 may include various communication modules such as alocal wireless communication module and a wireless communication module,and the like. Here, the local wireless communication module may be amodule performing wireless communication with external devices locatedin a short distance according to a local wireless communication typesuch as Bluetooth and ZigBee. Further, the wireless communication modulemay be a module which is connected to an external network according to awireless communication protocol such as WI-FI, IEEE, and the like, toperform communications. In addition, the wireless communication modulemay further include a mobile communication module which may be connectedto a mobile communication network according to various mobilecommunication standards such as 3rd generation (3G), 3rd generationpartnership project (3GPP), long term evolution (LTE), and the like toperform communications.

According to an exemplary embodiment, the communicator 120 communicateswith the external devices by the wireless communication scheme. However,this is only an example, and the communicator 120 may communicate withthe external devices by a wired communication scheme, etc.

The signal processor 130 processes a signal in a form in which the audioand video data of the contents received through the communicator 130from the outside may be output through the display device 150 and theintegrated speaker 160. When the signal processing is performed on theaudio data included in the contents, the signal processor 130 mayperform the signal processing on the corresponding audio data tocorrespond to the type of the integrated speaker 160. For example, whenthe integrated speaker 160 outputs multi-channel audio which outputsaudio of the low-pitched tone band, the middle and high-pitched toneband, and the high pass band, the signal processor 130 may filter thecorresponding audio data with the audio signals corresponding to eachchannel and output the filtered audio data through the integratedspeaker 160.

The display device 150 displays the video data subjected to the signalprocessing by the signal processor 130 among the video and audio dataincluded in the contents and various types of user interface (UI) menuswhich perform a control operation on the screen. The display device 150may be implemented as a liquid crystal display (LCD), an organic lightemitting display (OLED), a plasma display panel (PDP), and the like. Thedisplay device 150 may be implemented with a touch pad which receives atouch command of the user and may be implemented in a touch screen whichforms a mutual layer structure along with the input device 110. Theinput device 110 is the touch pad.

The integrated speaker 160 outputs the audio signals in the low-pitchedtone band and the middle and high-pitched tone band, which are subjectedto the signal processing by the signal processor 130 among the video andaudio data included in the contents. To output the audio signals in thelow-pitched tone band and the middle and high-pitched tone band, theintegrated speaker 160 may include a woofer speaker 161 and at least onefront speaker 163. The woofer speaker 161 outputs the audio signal inthe low-pitched tone band which is subjected to the signal processing bythe signal processor 130. The at least one front speaker 163 is adjacentto the woofer speaker 161 and may output the audio signal in the middleand high-pitched tone band which is subjected to the signal processingby the signal processor 130. According to an exemplary embodiment, theat least one front speaker 163 is adjacent to the woofer speaker 161,and may output the audio signal in the middle and high-pitched tone bandwhich is subjected to the signal processing by the signal processor 130in the same output direction as the audio output direction of the wooferspeaker 161. Therefore, the integrated speaker 160 may output the audiosignals in the low-pitched tone band and the middle and high-pitchedtone band in the same output direction through the woofer speaker 161and the at least one front speaker 163 adjacent to the woofer speaker161.

The plurality of integrated speakers 160 are located at an end area ofthe display apparatus. Therefore, the audio signals in the low-pitchedtone band and the middle and high-pitched tone band output from thewoofer speakers 161 and the at least one front speaker 163, which areincluded in each of the plurality of integrated speakers 160, are fireddown and the down-fired audio signals in the low-pitched tone band andthe middle and high-pitched tone band may be diffracted by the lowersurface adjacent to the display apparatus 100 and transferred to thefront surface of the display apparatus 100.

FIG. 4 is a diagram of the operation of radiating audio signals in thelow-pitched tone band and the middle and high-pitched tone band throughthe plurality of integrated speakers in the display apparatus accordingto an exemplary embodiment.

As illustrated in FIG. 4, the end area of a display apparatus 100 may bemounted with a plurality of integrated speakers 160 a and 160 b. Indetail, among the plurality of integrated speakers, a first integratedspeaker 160 a may be mounted in the left area in the end area of thedisplay apparatus 100 and a second integrated speaker 160 b may bemounted in a right area in the end area of the display apparatus 100.Therefore, the first integrated speaker 160 a mounted in a lower leftarea of the display apparatus 100 may include a first woofer speaker 161a and a first front speaker 163 a and the second integrated speaker 160b mounted in a lower right area of the display apparatus 100 may includea second woofer speaker 161 b and a second front speaker 163 b.

In the above configuration in FIG. 4, the first and second wooferspeakers 161 a and 161 b are speakers which fire the same audio signalin the low-pitched tone band down and the first and second frontspeakers 163 a and 163 b are speakers which fire the audio signal in themiddle and high-pitched tone band down. In this case, the audio signalin the middle and high-pitched tone band fired through the first frontspeaker 163 a may be a left channel audio signal and the audio signal inthe middle and high-pitched tone band radiated through the second frontspeaker 163 b may be a right channel audio signal. Further, an audiooutput terminal which outputs the audio signal in the low-pitched toneband through the first woofer speaker 161 a and an audio output terminalwhich outputs the audio signal in the middle and high-pitched tone bandcorresponding to the left channel through the first front speaker 163 amaximally adhere to each other to output the respective audio signals inthe same direction. Similarly, an audio output terminal which outputsthe audio signal in the low-pitched tone band through the second wooferspeaker 161 b and an audio output terminal which outputs the audiosignal in the middle and high-pitched tone band corresponding to theright channel through the second front speaker 163 b maximally adhere toeach other to output the respective audio signals in the same direction.

Therefore, the audio signal in the low-pitched tone band fired downthrough the first woofer speaker 161 a and the audio signal in themiddle and high-pitched tone band corresponding to the left channelfired down through the first integrated speaker 160 a may be diffractedby the lower surface adjacent to the display apparatus 100 andtransferred to the front surface of the display apparatus 100.Similarly, the audio signal in the low-pitched tone band fired downthrough the second woofer speaker 161 b and the audio signal in themiddle and high-pitched tone band corresponding to the right channelfired down through the second integrated speaker 160 b may be diffractedby the lower surface adjacent to the display apparatus 100 andtransferred to the front surface of the display apparatus 100.

The first and second front speakers 163 a and 163 b included in each ofthe first and second integrated speakers 160 a and 160 b according to anexemplary embodiment may be configured in plural. As such, when thefirst and second front speakers 163 a and 163 b are configured inplural, the plurality of first front speakers 163 a output the audiosignals in the middle and high-pitched tone band corresponding to theleft channel and the plurality of second front speakers 163 b output theaudio signals in the middle and high-pitched tone band corresponding tothe right channel. As such, when each of the first and second frontspeakers 163 a and 163 b is configured in plural, a sound volume of theaudio in the middle and high-pitched tone band corresponding to each ofthe left and right channels may be increased more than when the firstand second front speakers 163 a and 163 b are configured as one.

FIGS. 5A and 5B are diagrams illustrating the output direction of theaudio signal output through the integrated speaker in the displayapparatus according to an exemplary embodiment.

FIG. 5A illustrates an exemplary embodiment in which the audio signalsoutput through the woofer speaker 20 and the first and second frontspeakers 30 a and 30 b are diffracted by external factors andtransferred to the front surface of the display apparatus 10. Further,FIG. 5b illustrates that the audio signals in the low-pitched tone bandand the middle and high-pitched tone band output through the pluralityof integrated speakers 160 a and 160 b in the display apparatus 100according to an exemplary embodiment are transferred to the frontsurface of the display apparatus 100.

As illustrated in FIG. 5A, the woofer speaker 20 outputs the audiosignal in the low-pitched tone band by the back-firing scheme, in whichthe audio signal in the low-pitched tone band is diffracted by the backwall surface and the side wall surface adjacent to the display apparatus10 and transferred to the front surface of the display apparatus 10.Further, the first and second front speakers 30 a and 30 b output theaudio signals in the middle and high-pitched tone band corresponding toeach of the left channel and right channel by the down-firing scheme, inwhich each of the audio signals in the middle and high-pitched tone bandis diffracted by the lower surface adjacent to the display apparatus 10and transferred to the front surface of the display apparatus 10.

As such, the scheme for outputting audio from the woofer speaker 20 andthe scheme for outputting audio from the first and second front speakers30 a and 30 b are different. Thus, the difference between the transferdistance of the audio signal in the low-pitched tone band to the frontsurface of the display apparatus 10 and the transfer distance of theaudio signal in the middle and high-pitched tone band to the frontsurface of the display apparatus 10 occurs. Therefore, the phase changein the X-band section in which the audio signals in the low-pitched toneband and the middle and high-pitched tone band are commonly outputoccurs according to the listening position of the user. Therefore, whenthe user is at a position at which the phase change in the X-bandsection occurs, the user has an inconvenience when listening thelow-quality audio in the X-band section.

As illustrated in FIG. 5b , the audio signals in the low-pitched toneband and the middle and high-pitched tone band are output through thefirst and second integrated speakers 160 a and 160 b in the displayapparatus 100 according to an exemplary embodiment by the down-firingscheme. In detail, the first integrated speaker 160 a outputs the audiosignal in the low-pitched tone band output through the first wooferspeaker 161 a and the audio signal in the middle and high-pitched toneband corresponding to the left channel output through the first frontspeaker 163 a by the down-firing scheme. Similarly, the secondintegrated speaker 160 b outputs the audio signal in the low-pitchedtone band output through the second woofer speaker 161 b and the audiosignal in the middle and high-pitched tone band corresponding to theright channel output through the second front speaker 163 b by thedown-firing scheme. Therefore, the audio signals in the low-pitched toneband and the middle and high-pitched tone band output through the firstand second integrated speakers 160 a and 160 b are each diffracted bythe lower surface adjacent to the display apparatus 100 and transferredto the front surface of the display apparatus 10.

As such, the first and second integrated speakers 160 a and 160 b in thedisplay apparatus 100 according to an exemplary embodiment output theaudio signals in the low-pitched tone band and the middle andhigh-pitched tone band by the same down-firing scheme. Therefore, thedifference is small between the transfer distance of the audio signal inthe low-pitched tone band to the front surface of the display apparatus10 and the transfer distance of the audio signal in the middle andhigh-pitched tone band to the front surface of the display apparatus 10.Therefore, consistency of sound according to a listening position of auser may be improved.

Below, the foregoing integrated speaker 160 will be described in moredetail.

FIG. 6 is a perspective view of the integrated speaker according to anexemplary embodiment.

As described above, the first and second integrated speakers 160 a and160 b which output the audio signal in the low-pitched tone band and theaudio signal in the middle and high-pitched tone band in the samedirection are mounted in the left and right end areas of the displayapparatus 100. The first integrated speaker 160 a mounted in the leftend area of the display apparatus 100 includes the first woofer speaker161 a which outputs the audio signal in the low-pitched tone band andthe first front speaker 163 a which outputs the audio signal in themiddle and high-pitched tone band for the left channel in the sameoutput direction as the output direction of the audio signal of thefirst woofer speaker 161 a. Similarly, the second integrated speaker 160b mounted in the right end area of the display apparatus 100 includesthe second woofer speaker 161 b which outputs the audio signal in thelow-pitched tone band and the second front speaker 163 b which outputsthe audio signal in the middle and high-pitched tone band for the rightchannel in the same output direction as the output direction of theaudio signal of the second woofer speaker 161 b.

In detail, as illustrated in FIG. 6, each of the first and secondintegrated speakers 160 a and 160 b, which output the audio signals inthe low-pitched tone band and the middle and high-pitched tone band isconfigured of a woofer chamber 500 and a front speaker chamber 600. Thewoofer chamber 500 is an area in which each of the first and secondwoofer speakers 161 a and 161 b is mounted and the front speaker chamber600 is an area in which each of the first and second front speakers 163a and 163 b is mounted.

Each woofer speaker 160 of the first and second woofer speakers 161 aand 161 b mounted in the woofer chamber 500 may include a woofer device511 and a duct 521. The woofer device 511 outputs woofer sound for theaudio signal in the low-pitched tone band and the duct 521 resonates anacoustic of the woofer sound output from the woofer device 511 toamplify the low-pitched tone band of the audio signal. The woofer device511 and the duct 521 may be formed in a band pass enclosure or a ventedenclosure.

According to an exemplary embodiment, each of the first and secondwoofer speakers 161 a and 161 b including the woofer device 511 and theduct 521 is formed in the band pass enclosure. In this case, the wooferchamber 500 in which each of the first and second woofer speakers 161 aand 161 b are mounted may be partitioned into a back chamber 510 and afront chamber 520. Therefore, the woofer device 511 which outputs thewoofer sound for the audio signal in the low-pitched tone band may beformed in the back chamber 510 and the duct 521 which amplifies thelow-pitched tone band of the audio signal by resonating the acoustic ofthe woofer sound output from the woofer device 511 may be formed in thefront chamber 520.

The back chamber 510 has a structure in which the remaining area otherthan an area in which the woofer sound of the woofer device 511 istransferred to the front chamber 520 side is sealed and the frontchamber 520 has a structure in which the remaining area other than anarea in which the woofer sound of the woofer device 511 is transferredand an area in which the woofer sound having the amplified low-pitchedtone band is fired through the duct 521 is sealed. Therefore, the woofersound output through the woofer device 511 is transferred to the frontchamber 520 side and the duct 521 resonates the acoustic of the woofersound introduced into the front chamber 520. Thus, the resonatedacoustic of the woofer sound may be fired to the outside. In this case,the duct 521 formed in the back chamber 510 is designed to be toward thelower surface of the display apparatus 100. Thus, the woofer sound firedthrough the duct 521 may be fired downwardly of the display apparatus100.

As such, each of the first and second woofer speakers 161 a and 161 baccording to an exemplary embodiment forms the woofer device 511 and theduct 521 in the band pass enclosure modeled by a Helmholtz resonator toserve as a band pass filter which amplifies sound corresponding to aresonance frequency in the woofer sound output from the woofer device511 and cut-off sound having a frequency higher than that of theamplified sound. Therefore, an exemplary embodiment may amplify thelow-pitched tone band while reducing a volume of the area in which thewoofer device 511 outputting the woofer sound for the audio signal inthe low-pitched tone band is formed. In addition, an exemplaryembodiment may improve low band loss and decrease noise which ma occurduring a process of synthesizing a woofer sound and duct sound bydirectly transferring the woofer sound for the audio signal in thelow-pitched tone band to the duct 521 amplifying the low-pitched toneband.

The front speaker chamber 600 in which the first and second frontspeakers 163 a and 163 b are each mounted may be formed in a sealedenclosure in which the remaining area other than speaker devices 620-1and 620-2 through which the audio signal in the middle and high-pitchedtone band is output through each of the first and second front speakers163 a and 163 b is sealed. Here, the first and second front speakers 163a and 163 b may be configured in plural to expand a size in volume ofthe audio in the middle and high-pitched tone band corresponding to theleft channel and the right channel. In this case, the plurality of firstfront speakers 163 a and the plurality of second front speakers 163 bmay each output the audio signals in the same middle and high-pitchedtone band corresponding to each of the left channel and the rightchannel through the speaker devices 620-1 and 620-2.

As such, the first and second front speakers 163 a and 163 b whichoutput the audio signals in the middle and high-pitched tone bandcorresponding to each of the left channel and the right channel throughthe speaker devices 620-1 and 620-2 may be disposed to be close to theduct 521 amplifying the low-pitched tone band of the woofer sound andoutput the audio signal in the middle and high-pitched tone band in thesame output direction as the output direction in which the woofer soundhaving the amplified low-pitched tone band is fired through the duct521.

Therefore, the transfer path through which the audio signal in thelow-pitched tone band output from each of the first and second wooferspeakers 161 a and 161 b is transferred to the front surface of thedisplay apparatus 100 is approximately the same as the transfer paththrough which the audio signal in the middle and high-pitched tone bandoutput from each of the first and second front speakers 163 a and 163 bis transferred to the front surface of the display apparatus 100.Therefore, the distance difference between the two audio signals doesnot occur. Therefore, consistency of sound according to a listeningposition of a user may be improved.

According to an exemplary embodiment, each of the first and secondwoofer speakers 161 a and 161 b is formed in the band pass enclosure.However, an exemplary embodiment is not limited thereto, but each of thefirst and second woofer speakers 161 a and 161 b may be not onlyimplemented in the band pass enclosure, but may be also implemented invarious enclosures.

Below, the first and second woofer speakers 161 a and 161 b implementedin various enclosures will be described with reference to FIGS. 7 to 10.

FIG. 7 is a diagram of the woofer speaker to which the band passenclosure is applied, in the integrated speaker according to anexemplary embodiment.

As illustrated in FIG. 7, the woofer chamber 500 is the band passenclosure and is the area in which the audio signals in the low-pitchedtone band are output from each of the first and second woofer speakers161 a and 161 b. To this end, the woofer chamber 500 includes the backchamber 510 and the front chamber 520. The woofer device 511 whichoutputs the woofer sound for the audio signal in the low-pitched toneband is formed in the back chamber 510, and the duct 521 which amplifiesthe low-pitched tone band of the audio signal by resonating the acousticof the woofer sound output from the woofer device 511 is formed in thefront chamber 520. The back chamber 510 has a sealed structure in whichthe remaining area other than the area in which the woofer sound outputfrom the woofer device 511 is transferred to the front chamber 520 sidemay be blocked from the outside. Further, the front chamber 520 has asealed structure in which the remaining area other than the area inwhich the woofer sound output from the woofer device 511 is introducedmay be blocked from the outside.

When the woofer sound output from the woofer device 511 is introducedinto the front chamber 520, the duct 521 formed in the front chamber 520serves as the band pass filter to amplify the sound corresponding to theresonance frequency in the woofer sound transferred to the front chamber520 and blocks sound having a frequency higher than that of theamplified sound to fire the resonance sound having the amplifiedlow-pitched tone band. As such, when the resonance sound is firedthrough the duct 521, the first and second woofer speakers 161 a and 161b output the audio signal having the amplified low-pitched tone band tothe lower area of the display apparatus 100 based on the resonance soundfired through the duct 521. Therefore, the audio signal having theamplified low-pitched tone band may be diffracted by the lower surfaceadjacent to the display apparatus 100 and thus transferred to the frontsurface of the display apparatus 100.

FIG. 8 is a diagram of the woofer speaker to which a passive radiatorenclosure of a band pass type is applied, in the integrated speakeraccording to another exemplary embodiment.

As illustrated in FIG. 8, the woofer chamber 500 is formed in a passiveradiator enclosure of the band pass type and is the area in which theaudio signals in the low-pitched tone band are output from each of thefirst and second woofer speakers 161 a and 161 b. To this end, thewoofer chamber 500 includes the back chamber 510 and the front chamber520. The woofer device 511 which outputs the woofer sound for the audiosignal in the low-pitched tone band is formed in the back chamber 510and a diaphragm 523 which amplifies the low-pitched tone band of theaudio signal by resonating vibration of the woofer sound output from thewoofer device 511 is formed in the front chamber 520. The back chamber510 has the sealed structure in which the remaining area other than thearea in which the woofer sound output from the woofer device 511 istransferred to the front chamber 520 side may be blocked from theoutside. Further, the front chamber 520 has the sealed structure inwhich the remaining area other than the area in which the woofer soundoutput from the woofer device 511 is introduced may be blocked from theoutside.

When the woofer sound output from the woofer device 511 is introduced tothe front chamber 520 side, the diaphragm 523 formed in the frontchamber 520 serves as the band pass filter to resonate a vibration ofsound corresponding to the resonance frequency in the woofer soundtransferred to the front chamber 520 and amplify the low-pitched toneband of the audio signal. As such, when the resonance sound is firedthrough the diaphragm 523, the first and second woofer speakers 161 aand 161 b output the audio signal having the amplified low-pitched toneband to the lower area of the display apparatus 100 based on theresonance sound fired through the diaphragm 523. Therefore, the audiosignal having the amplified low-pitched tone band may be diffracted bythe lower surface adjacent to the display apparatus 100 and transferredto the front surface of the display apparatus 100.

FIG. 9 is a diagram of the woofer speaker to which a vented enclosure isapplied, in the integrated speaker according to an exemplary embodiment.

As illustrated in FIG. 9, according to an exemplary embodiment, thewoofer chamber 500 is formed in the vented enclosure and is the area inwhich the audio signals in the low-pitched tone band are output fromeach of the first and second woofer speakers 161 a and 161 b. The wooferchamber 500 may be configured of a single chamber and the woofer device511 and the duct 513 are formed in the woofer chamber 500. The wooferchamber 500 may have the sealed structure in which the remaining areaother than the area in which the front sound and the resonance sound arefired to the outside through the woofer device 511 and the duct 513 maybe blocked from the outside.

The woofer device 511 formed in the woofer chamber 500 outputs the frontsound for the audio signal in the low-pitched tone band and the duct 513resonates the acoustic of the back sound having an antiphase reproducedin back of the woofer device 511 to amplify the low-pitched tone band ofthe audio signal and fire the resonance sound. That is, the duct 513amplifies the sound corresponding to the resonance frequency in the backsound reproduced in back of the woofer device 511 and blocks soundhaving a frequency higher than that of the amplified sound to be able tofire the resonance sound having the amplified low-pitched tone band tothe outside. As such, when the back sound and the resonance sound arefired to the outside through the woofer device 511 and the duct 513,each of the first and second woofer speakers 161 a and 161 b synthesizesthe front sound output from the woofer device 511 with the resonancesound fired through the duct 513 and fires the woofer sound, in whichthe front sound and the resonance sound are synthesized, by thedown-firing scheme to be able to output the audio signal having thereinforced low-pitched tone band.

FIG. 10 is a diagram of the woofer speaker to which the passive radiatorenclosure of the vented type is applied, in the integrated speakeraccording to another exemplary embodiment.

As illustrated in FIG. 10, according to an exemplary embodiment, thewoofer chamber 500 is formed in the passive radiator enclosure of thevented type and is the area in which the audio signals in thelow-pitched tone band are output from each of the first and secondwoofer speakers 161 a and 161 b. The woofer chamber 500 may beconfigured of a single chamber and the woofer device 511 and thediaphragm 515 are formed in the woofer chamber 500. The woofer chamber500 may have the sealed structure in which the remaining area other thanthe area in which the front sound and the resonance sound are fired tothe outside through the woofer device 511 and the diaphragm 515 may beblocked from the outside.

The woofer device 511 formed in the woofer chamber 500 outputs the frontsound for the audio signal in the low-pitched tone band and thediaphragm 515 resonates the vibration of the back sound having anantiphase reproduced in back of the woofer device 511 to amplify thelow-pitched tone band of the audio signal and fire the resonance sound.That is, the diaphragm 515 resonates the vibration of the soundcorresponding to the resonance frequency in the back sound output inback of the woofer device 511 to be able to amplify the low-pitched toneband of the audio signal. As such, when the front sound and theresonance sound having the amplified low-pitched tone band are fired tothe outside through the woofer device 511 and the diaphragm 515, each ofthe first and second woofer speakers 161 a and 161 b synthesizes thefront sound output from the woofer device 511 with the resonance soundfired through the diaphragm 515 and fires the woofer sound, in which thefront sound and the resonance sound are synthesized, by the down-firingscheme to be able to output the audio signal having the reinforcedlow-pitched tone band.

Below, the first and second front speakers 163 a and 163 b, which outputthe audio signals in the middle and high-pitched tone band from each ofthe first and second integrated speakers 160 a and 160 b, will bedescribed in detail.

FIG. 11 is a diagram of the front speaker to which the sealed enclosureis applied, in the integrated speaker according to an exemplaryembodiment.

As illustrated in FIG. 11, the front speaker chamber 600 is an area inwhich each of the first and second front speakers 163 a and 163 b ismounted and the audio signals in the middle and high-pitched tone bandcorresponding to the left and right channels are output. As such, thefront speaker chamber 600 in which the first and second front speakers163 a and 163 b are each mounted may be configured of a single chamberand may be formed in the sealed enclosure in which the remaining areaother than the area in which the audio signal in the middle andhigh-pitched tone band is output through the first and second frontspeakers 163 a and 163 b is sealed.

Each of the first and second front speakers 163 a and 163 b, which aremounted in the front speaker chamber 600, according to an exemplaryembodiment, may be configured in plural to expand a size in volume ofthe audio in the middle and high-pitched tone band corresponding to theleft channel and the right channel. In this case, the plurality of firstfront speakers 163 a and the plurality of second front speakers 163 bmay each output the audio signals in the same middle and high-pitchedtone band corresponding to each of the left channel and the rightchannel through the speaker devices 620-1 and 620-2. Therefore, thefront speaker chamber 600 may output the audio signal having theexpanded size of volume in the middle and high-pitched tone band throughthe plurality of first and second front speakers 163 a and 163 b.

As such, each of the first and second front speakers 163 a and 163 bwhich is mounted in the front speaker chamber 600 to output the audiosignals in the middle and high-pitched tone band corresponding to theleft channel and the right channel may output the audio signal in themiddle and high-pitched tone band expanded from a low-pitched tone bandaccording to an exemplary embodiment.

FIG. 12 is a diagram of the front speaker through which the audio signalin a middle and high-pitched tone band expanded from a low-pitched toneband is output, by applying the vented enclosure in the integratedspeaker according to an exemplary embodiment.

As illustrated in FIG. 12, according to an exemplary embodiment, each ofthe first and second integrated speakers 160 a and 160 b includes thefirst and second front speakers 163 a and 163 b which output the audiosignals in the middle and high-pitched tone band corresponding to theleft channel and the right channel and each of the first and secondfront speakers 163 a and 163 b is formed in the front speaker chamber600 area. Further, the duct 630 to amplify the audio signal in thelow-pitched tone band in connection with the audio signal in the middleand high-pitched tone band output from the first or second frontspeakers 163 a and 163 b is formed in the front speaker chamber 600area. The duct 630 serves to amplify the sound corresponding to theresonance frequency in the back sound reproduced in back of the firstand second front speakers 163 a and 163 b and blocks the sound having afrequency higher than that of the amplified sound to fire the resonancesound having the amplified band to the outside.

The front speaker chamber 600 may be formed in the vented enclosure. Asthe front speaker chamber 600 is formed in the vented enclosure, thefront speaker chamber 600 may have a sealed structure in which theremaining area other than the area in which the audio signal in themiddle and high-pitched tone band is output through the first or secondfront speaker 163 a or 163 b and the area in which the audio signal inthe low-pitched tone band is output through the duct 630 is blocked fromthe outside.

The front speaker chamber 600 may include the first front speaker 163 awhich outputs the audio signal in the middle and high-pitched tone bandof the left channel and the duct 630 which outputs the audio signal inthe low-pitched tone band. The first front speaker 163 a may beconfigured in plural to expand the size of volume of the audio in themiddle and high-pitched tone band corresponding to the left channel. Inthis case, the plurality of first front speakers 163 a output the audiosignal in the same middle and high-pitched tone band corresponding tothe left channel through the speaker devices 620-1 and 620-2 to be ableto output the audio signal in the middle and high-pitched tone bandhaving the expanded size of volume. Further, the duct 630 fires theresonance sound having the amplified sound in the band corresponding tothe resonance frequency in the back sound reproduced in back of thefirst front speaker 163 a to the outside.

The front speaker chamber 600 including the first front speaker 163 aand the duct 630 may have the sealed structure in which the remainingarea other than the area in which the audio signal of the left channelis output through the speaker devices 620-1 and 620-2 of the first frontspeaker 163 a and the area in which the audio signal in the low-pitchedtone band is output through the duct 630 is blocked from the outside.Therefore, the front speaker chamber 600 outputs the audio signal in themiddle and high-pitched tone band of the left channel output through thespeaker devices 620-1 and 620-2 of the first front speaker 163 a and theresonance sound having the amplified low-pitched tone band fired throughthe duct 630 to the outside. The audio signal in the middle andhigh-pitched tone band expanded from the low-pitched tone band inconnection with the audio signal of the left channel may be output tothe outside through the front speaker chamber 600.

Similarly, another front speaker chamber 600 may include the secondfront speaker 163 b which outputs the audio signal in the middle andhigh-pitched tone band of the right channel and the duct 630 whichoutputs the audio signal in the low-pitched tone band. The second frontspeaker 163 b may be configured in plural to expand the size of volumeof the audio in the middle and high-pitched tone band corresponding tothe right channel. In this case, the plurality of second front speakers163 b output the audio signal in the same middle and high-pitched toneband corresponding to the right channel through the speaker devices620-1 and 620-2 to be able to output the audio signal in the middle andhigh-pitched tone band having the expanded size of volume. Further, theduct 630 fires the resonance sound having the amplified sound in theband corresponding to the resonance frequency in the back soundreproduced in back of the second front speaker 163 b to the outside.

The front speaker chamber 600 including the second front speaker 163 band the duct 630 may have the sealed structure in which the remainingarea other than the area in which the audio signal of the right channelis output through the speaker devices 620-1 and 620-2 of the secondfront speaker 163 b and the area in which the audio signal in thelow-pitched tone band is output through the duct 630 is blocked from theoutside. Therefore, the front speaker chamber 600 outputs the audiosignal in the middle and high-pitched tone band of the left channeloutput through the speaker devices 620-1 and 620-2 of the second frontspeaker 163 b and the resonance sound having the amplified low-pitchedtone band fired through the duct 630 to the outside. Therefore, theaudio signal in the middle and high-pitched tone band having theexpanded low-pitched tone band in connection with the audio signal ofthe left channel may be output to the outside through the front speakerchamber 600.

FIG. 13 is a diagram of the front speaker through which the audio signalin the middle and high-pitched tone band extending from the low-pitchedtone band is output, by applying the passive radiator enclosure of thevented type in the integrated speaker according to another exemplaryembodiment.

As illustrated in FIG. 13, according to an exemplary embodiment, each ofthe first and second integrated speakers 160 a and 160 b includes thefirst and second front speakers 163 a and 163 b which output the audiosignals in the middle and high-pitched tone band corresponding to theleft channel and the right channel and each of the first and secondfront speakers 163 a and 163 b is formed in the front speaker chamber600 area. Further, the diaphragm 640 to amplify the audio signal in thelow-pitched tone band in connection with the audio signal in the middleand high-pitched tone band output from the first or second frontspeakers 163 a or 163 b is formed in the front speaker chamber 600 area.The diaphragm 640 serves to resonate the vibration of the back soundreproduced in back of the first and second front speakers 163 a and 163b to amplify the low-pitched tone band of the audio signal and fire theresonance sound.

The front speaker chamber 600 may be formed in a passive radiatorenclosure of the vented type. As the front speaker chamber 600 is formedin the passive radiator enclosure of the vented type, the front speakerchamber 600 may have the sealed structure in which the remaining areaother than the area in which the audio signal in the middle andhigh-pitched tone band is output through the first or second frontspeaker 163 a or 163 b and the area in which the resonance sound havingthe amplified low-pitched tone band is fired through the diaphragm 640is blocked from the outside.

The front speaker chamber 600 may include the first front speaker 163 awhich outputs the audio signal in the middle and high-pitched tone bandof the left channel and the diaphragm 640 which fires the resonancesound having the amplified low-pitched tone band to the outside. Asdescribed above, the first front speaker 163 a may be configured inplural to expand the size of volume of the audio in the middle andhigh-pitched tone band corresponding to the left channel. In this case,the plurality of first front speakers 163 a output the audio signal inthe same middle and high-pitched tone band corresponding to the leftchannel through the speaker devices 620-1 and 620-2 to be able to outputthe audio signal in the middle and high-pitched tone band having theexpanded size of volume. Further, the diaphragm 640 fires the resonancesound having the amplified low-pitched tone band in connection with theback sound reproduced in back of the first front speaker 163 a to theoutside.

The front speaker chamber 600 including the first front speaker 163 aand the diaphragm 640 may have the sealed structure in which theremaining area other than the area in which the audio signal of the leftchannel is output through the first front speaker 163 a and the area inwhich the resonance sound having the amplified low-pitched tone band isfired to the outside through the diaphragm 640 is blocked from theoutside. Therefore, the front speaker chamber 600 outputs the audiosignal in the middle and high-pitched tone band of the left channeloutput through the first front speaker 163 a and the resonance soundhaving the amplified low-pitched tone band fired through the diaphragm640 to the outside. Therefore, the audio signal in the middle andhigh-pitched tone band having the expanded low-pitched tone band inconnection with the audio signal of the left channel may be output tothe outside through the front speaker chamber 600.

Similarly, another front speaker chamber 600 may include the secondfront speaker 163 b which outputs the audio signal in the middle andhigh-pitched tone band of the right channel and the diaphragm 640 whichfires the resonance sound having the amplified low-pitched tone band tothe outside. The second front speaker 163 b may be configured in pluralto expand the size of volume of the audio in the middle and high-pitchedtone band corresponding to the right channel. In this case, theplurality of second front speakers 163 b output the audio signal in thesame middle and high-pitched tone band corresponding to the rightchannel through the speaker devices 620-1 and 620-2 to be able to outputthe audio signal in the middle and high-pitched tone band having theexpanded size of volume. Further, the diaphragm 640 fires the resonancesound having the amplified low-pitched tone band in connection with theback sound reproduced in back of the second front speaker 163 b to theoutside.

The front speaker chamber 600 including the second front speaker 163 band the diaphragm 640 may have the sealed structure in which theremaining area other than the area in which the audio signal in themiddle and high-pitched tone band of the right channel is output throughthe second front speaker 163 b and the area in which the resonance soundhaving the amplified low-pitched tone band is fired to the outsidethrough the diaphragm 640 is blocked. Therefore, the front speakerchamber 600 outputs the audio signal in the middle and high-pitched toneband of the right channel output through the second front speaker 163 band the resonance sound having the amplified low-pitched tone band firedthrough the diaphragm 640 to the outside. Therefore, the audio signal inthe middle and high-pitched tone band having the expanded low-pitchedtone band in connection with the audio signal of the right channel maybe output to the outside through the front speaker chamber 600.

The front speaker chamber 600 may not only output the audio signal inthe middle and high-pitched tone band but may also output the audiosignal expanded from the high-pitched tone band to the outside.

FIG. 14 is a diagram of the front speaker through which the audio signalin the middle and high-pitched tone band extending from the high-pitchedtone band is output, in the integrated speaker according to an exemplaryembodiment.

As illustrated in FIG. 14, according to an exemplary embodiment, each ofthe first and second integrated speakers 160 a and 160 b includes thefirst and second front speakers 163 a and 163 b which output the audiosignals in the middle and high-pitched tone band corresponding to theleft channel and the right channel and each of the first and secondfront speakers 163 a and 163 b is formed in the front speaker chamber600 area. Further, a tweeter 650 which outputs the audio signal in thehigh-pitched tone band may be included in the front speaker chamber 600area. The tweeter 650 outputs the audio signal in the high-pitched toneband which is subjected to the signal processing by the signal processor130.

The front speaker chamber 600 may be formed in the sealed enclosure. Asthe front speaker chamber 600 is formed in the sealed enclosure, thefront speaker chamber 600 may have a sealed structure in which theremaining area other than the area in which the audio signal in themiddle and high-pitched tone band is output through the first or secondfront speaker 163 a or 163 b and the area in which the audio signal inthe high-pitched tone band is output through the tweeter 650 is blockedfrom the outside.

The first and second front speakers 163 a and 163 b outputting the audiosignal in the middle and high-pitched tone band corresponding to theleft channel and the right channel may be configured in plural to expandthe size of volume of the audio in the middle and high-pitched tone bandcorresponding to the left channel and the right channel. In this case,the plurality of first and second front speakers 163 a and 163 b mayeach output the audio signals in the same middle and high-pitched toneband corresponding to the left channel and the right channel through thespeaker devices 620-1 and 620-2.

The front speaker chamber 600 may include the first front speaker 163 awhich outputs the audio signal in the middle and high-pitched tone bandof the left channel and the tweeter 650 which outputs the audio signalin the high-pitched tone band of the left channel. The front speakerchamber 600 including the first front speaker 163 a and the tweeter 650may have the sealed structure in which the remaining area other than thearea in which the audio signal of the left channel is output through thefirst front speaker 163 a and the area in which the audio signal in thehigh-pitched tone band of the left channel is output through the tweeter650 is blocked from the outside. In this case, the first front speaker163 a and the tweeter 650, which are formed in the front speaker chamber600, may output the audio signals in the middle and high-pitched toneband and the high-pitched tone band corresponding to the left channel inthe same output direction. Therefore, the first front speaker 163 a andthe tweeter 650, which are formed in the front speaker chamber 600, mayoutput the audio signals in the middle and high-pitched tone band andthe high-pitched tone band corresponding to the left channel in the sameoutput direction.

Similarly, another front speaker chamber 600 may include the secondfront speaker 163 b which outputs the audio signal in the middle andhigh-pitched tone band of the right channel and the tweeter 650 whichoutputs the audio signal in the high-pitched tone band of the rightchannel. The front speaker chamber 600 including the second frontspeaker 163 b and the tweeter 650 may have the sealed structure in whichthe remaining area other than the area in which the audio signal of theright channel is output through the second front speaker 163 b and thearea in which the audio signal in the high-pitched tone band of theright channel is output through the tweeter 650 is blocked from theoutside. In this case, the second front speaker 163 b and the tweeter650, which are formed in the front speaker chamber 600, may output theaudio signals in the middle and high-pitched tone band and thehigh-pitched tone band corresponding to the right channel in the sameoutput direction. Therefore, the second front speaker 163 b and thetweeter 650, which are formed in the front speaker chamber 600, mayoutput the audio signals in the middle and high-pitched tone band andthe high-pitched tone band corresponding to the right channel in thesame output direction.

The front speaker chamber 600 may not only output the audio signal inthe middle and high-pitched tone band but may also output the audiosignal having the expanded low-pitched tone band and high-pitched toneband to the outside.

FIG. 15 is a diagram of the front speaker through which the audiosignals in the low-pitched tone band to the high-pitched tone band areoutput, in the integrated speaker according to an exemplary embodiment.

As illustrated in FIG. 15, according to an exemplary embodiment, each ofthe first and second integrated speakers 160 a and 160 b includes thefirst and second front speakers 163 a and 163 b which output the audiosignals in the middle and high-pitched tone band corresponding to theleft channel and the right channel and each of the first and secondfront speakers 163 a and 163 b is formed in the front speaker chamber600 area. Further, the duct 630 which outputs the audio signal in thelow-pitched tone band and the tweeter 650 which outputs the audio signalin the high-pitched tone band may be included in the front speakerchamber 600 area. Here, the duct 630 serves to fire the resonance soundhaving the amplified sound in the band corresponding to the resonancefrequency in the back sound reproduced in back of the first or secondfront speaker 163 a or 163 b to the outside. Further, the tweeter 650serves to output the audio signal in the high-pitched tone band which issubjected to the signal processing by the signal processor 130.

The front speaker chamber 600 may be formed in the vented enclosure. Asthe front speaker chamber 600 is formed in the vented enclosure, thefront speaker chamber 600 may have a sealed structure in which theremaining area other than the area in which the audio signal in themiddle and high-pitched tone band is output through the first or secondfront speaker 163 a or 163 b, the area in which the audio signal in thelow-pitched tone band is output through the duct 630, and the area inwhich the audio signal in the high-pitched tone band is output throughthe tweeter 650 is blocked from the outside.

The first and second front speakers 163 a and 163 b outputting the audiosignal in the middle and high-pitched tone band corresponding to theleft channel and the right channel may be configured in plural to expandthe size of volume of the audio in the middle and high-pitched tone bandcorresponding to the left channel and the right channel. In this case,the plurality of first and second front speakers 163 a and 163 b mayeach output the audio signals in the same middle and high-pitched toneband corresponding to the left channel and the right channel through thespeaker devices 620-1 and 620-2.

In detail, the front speaker chamber 600 may include the first frontspeaker 163 a which outputs the audio signal in the middle andhigh-pitched tone band of the left channel, the duct 630 which outputsthe audio signal in the low-pitched tone band, and the tweeter 650 whichoutputs the audio signal in the high-pitched tone band of the leftchannel. The front speaker chamber 600 including the first front speaker163 a, the duct 630, and the tweeter 650 may have the sealed structurein which the remaining area other than the area in which the audiosignal of the left channel is output through the first front speaker 163a, the area in which the audio signal in the low-pitched tone band isoutput through the duct 630, and the area in which the audio signal inthe high-pitched tone band of the left channel is output through thetweeter 650 is blocked from the outside. In this case, the first frontspeaker 163 a, the duct 630, and the tweeter 650, which are formed inthe front speaker chamber 600, may output the audio signals in themiddle and high-pitched tone band, the high-pitched tone band, and thelow-pitched tone band corresponding to the left channel in the sameoutput direction. Therefore, the first front speaker 163 a, the duct630, and the tweeter 650, which are formed in the front speaker chamber600, may output the audio signals having the low-pitched tone band andthe high-pitched tone band expanded in connection with the middle andhigh-pitched tone band corresponding to the left channel in the sameoutput direction.

Similarly, another front speaker chamber 600 includes the second frontspeaker 163 b which outputs the audio signal in the middle andhigh-pitched tone band of the right channel, the duct 630 which outputsthe audio signal in the low-pitched tone band, and the tweeter 650 whichoutputs the audio signal in the high-pitched tone band of the rightchannel. The front speaker chamber 600 including the second frontspeaker 163 b, the duct 630, and the tweeter 650 may have the sealedstructure in which the remaining area other than the area in which theaudio signal of the right channel is output through the second frontspeaker 163 b, the area in which the audio signal in the low-pitchedtone band is output through the duct 630, and the area in which theaudio signal in the high-pitched tone band of the right channel isoutput through the tweeter 650 is blocked from the outside. In thiscase, the second front speaker 163 b, the duct 630, and the tweeter 650,which are formed in the front speaker chamber 600, may output the audiosignals in the middle and high-pitched tone band, the high-pitched toneband, and the low-pitched tone band corresponding to the right channelin the same output direction. Therefore, the second front speaker 163 b,the duct 630, and the tweeter 650, which are formed in the front speakerchamber 600, may output the audio signals having the low-pitched toneband and the high-pitched tone band expanded in connection with themiddle and high-pitched tone band corresponding to the right channel inthe same output direction.

FIG. 16 is a diagram of the front speaker through which the audiosignals in the low-pitched tone band to the high-pitched tone band areoutput, by applying the passive radiator enclosure of the vented type inthe integrated speaker according to another exemplary embodiment.

FIG. 16 illustrates that in relation to FIG. 15 described above, in thefront speaker chamber 600, the diaphragm 640 is formed in the duct 630through which the audio signal in the low-pitched tone band is output.

In detail, the front speaker chamber 600 includes the first frontspeaker 163 a which outputs the audio signal in the middle andhigh-pitched tone band of the left channel, the duct 630 which resonatesthe vibration of the back sound reproduced in back of the first frontspeaker 163 a to fire the resonance sound having the amplifiedlow-pitched tone band of the audio signal, and the tweeter 650 whichoutputs the audio signal in the high-pitched tone band of the leftchannel. The front speaker chamber 600 including the first front speaker163 a, the diaphragm 640, and the tweeter 650 may have the sealedstructure in which the remaining area other than the area in which theaudio signal in the middle and high-pitched tone band of the leftchannel is output through the first front speaker 163 a, the area inwhich the resonance sound for the audio signal in the low-pitched toneband is output through the diaphragm 640, and the area in which theaudio signal in the high-pitched tone band of the left channel is outputthrough the tweeter 650 is blocked from the outside. In this case, thefirst front speaker 163 a, the diaphragm 640, and the tweeter 650, whichare formed in the front speaker chamber 600, may output the resonancesound for the audio signals in the middle and high-pitched tone band,the high-pitched tone band, and the low-pitched tone band correspondingto the left channel in the same output direction. Therefore, the firstfront speaker 163 a, the diaphragm 640, and the tweeter 650, which areformed in the front speaker chamber 600, may output the audio signalshaving the low-pitched tone band and the high-pitched tone band expandedin connection with the middle and high-pitched tone band correspondingto the left channel in the same output direction.

Similarly, another front speaker chamber 600 includes the second frontspeaker 163 b which outputs the audio signal in the middle andhigh-pitched tone band of the right channel, the diaphragm 640 whichfires the resonance sound having the amplified low-pitched tone band,and the tweeter 650 which outputs the audio signal in the high-pitchedtone band of the right channel. The front speaker chamber 600 includingthe second front speaker 163 b, the diaphragm 640, and the tweeter 650may have the sealed structure in which the remaining area other than thearea in which the audio signal of the right channel is output throughthe second front speaker 163 b, the area in which the resonance soundfor the audio signal in the low-pitched tone band is output through thediaphragm 640, and the area in which the audio signal in thehigh-pitched tone band of the right channel is output through thetweeter 650 is blocked from the outside. In this case, the second frontspeaker 163 b, the diaphragm 640, and the tweeter 650, which are formedin the front speaker chamber 600, may output the resonance sound for theaudio signals in the middle and high-pitched tone band, the high-pitchedtone band, and the low-pitched tone band corresponding to the rightchannel in the same output direction. Therefore, the second frontspeaker 163 b, the diaphragm 640, and the tweeter 650, which are formedin the front speaker chamber 600, may output the expanded audio signalshaving the low-pitched tone band and the high-pitched tone band inconnection with the middle and high-pitched tone band corresponding tothe right channel in the same output direction.

According to an exemplary embodiment, the first and second integratedspeakers 160 a and 160 b, which each output the audio signals in themiddle and low-pitched tone band corresponding to the left channel andthe right channel, and the audio signal in the low-pitched tone band maybe implemented in a single form. In this case, the single first andsecond front speakers 163 a and 163 b may each output the audio signalsin the middle and low-pitched tone band corresponding to the leftchannel and the right channel through the speaker devices 620-1 and620-2.

FIG. 17 is a diagram of the integrated speaker through which the audiosignals in the middle and low-pitched tone band and the low-pitched toneband corresponding to a left channel and a right channel are output, inthe display apparatus according to an exemplary embodiment.

The integrated speaker 160, which is implemented in the single form, ismounted at a center of the end of the display apparatus 100 such thatthe audio signals are output in the middle and low-pitched tone band andthe low-pitched tone band corresponding to the left channel and theright channel.

As illustrated in FIG. 17, the integrated speaker 160 in the single formincludes the woofer chamber 500 and the first and second front speakerchambers 600 a and 600 b. The woofer chamber 500 is the area in whichthe woofer speaker 161 which outputs the audio signal in the low-pitchedtone band is mounted. Further, the first and second front speakerchambers 600 a and 600 b are the area in which each of the first andsecond front speakers 163 a and 163 b which outputs the audio signals inthe middle and high-pitched tone band of the left channel and the rightchannel is mounted

The woofer chamber 500 and the first front speaker chamber 600 a inwhich the woofer speaker 161 and the first front speaker 163 a are eachmounted may be formed similar to FIG. 6. Further, the second frontspeaker chamber 600 b in which the second front speaker 163 b is mountedmay be formed adjacent to the front chamber 520 of the woofer chamber500. Similar to FIG. 6, the woofer chamber 500 in FIG. 17 may bepartitioned into the back chamber 510 in which the woofer device 511 isformed and the front chamber 520 in which the duct 521 is formed.Therefore, the second front speaker chamber 600 b may be formed adjacentto the front chamber 520 in which the duct 521 which resonates thewoofer sound of the woofer device 511 introduced from the back chamber510 to generate the resonance sound is formed.

The first and second front speakers 163 a and 163 b, which are formed inthe first and second front speaker chambers 600 a and 600 b of theintegrated speaker 160, implemented in the single form may be configuredin plural to expand the size of volume of the audio in the middle andhigh-pitched tone band corresponding to the left channel and the rightchannel. In this case, the plurality of first front speakers 163 a mayoutput the audio signals in the same middle and high-pitched tone bandcorresponding to the left channel through first speaker devices 620 a-1and 620 a-2 and the plurality of second front speakers 163 b may outputthe audio signals in the same middle and high-pitched tone bandcorresponding to the right channel through second speaker devices 620b-1 and 620 b-2.

Further, the first and second front speakers 163 a and 163 b and thewoofer speaker 161, which are formed in each chamber of the integratedspeaker 160 implemented in the single form, may output the audio signalsin the same output direction. That is, the audio signal in the middleand high-pitched tone band of the left channel output from the first andsecond speaker devices 620 a-1 and 620 a-2 of the first front speaker163 a, the audio signal in the middle and high-pitched tone band of theright channel output from the first and second speaker devices 620 b-1and 620 b-2 of the second front speakers 163 b, and the woofer soundhaving the amplified audio signal in the low-pitched tone band may beoutput to the lower area of the display apparatus 100 through the duct521.

Therefore, the audio signals in the middle and high-pitched tone band ofthe left channel and the right channel output through the first andsecond front speakers 163 a and 163 b and the woofer sound outputthrough the woofer speaker 161 may be diffracted by the lower surfaceadjacent to the display apparatus 100 and transferred to the frontsurface of the display apparatus 100.

An exemplary embodiment describes the integrated speaker 160 implementedin the single form being provided with the first integrated speaker 160a (described with reference to FIG. 6) and the second front speakerchamber 600 b which is formed adjacent to the woofer chamber 500 of thefirst integrated speaker 160 a. However, an exemplary embodiment is notlimited thereto. The woofer chamber 500 and the second front speakerchamber 600 b in which the woofer speaker 161 and the second frontspeaker 163 b in the integrated speaker 160 implemented in the singleform are each mounted may be formed similar to the second integratedspeaker 160 b in FIG. 6. In this case, the first front speaker chamber600 a in which the first front speaker 163 a is mounted may be formedadjacent to the front chamber 520 of the woofer chamber 500. Inaddition, the integrated speaker 160 implemented in the single form maybe in a form in which the respective first and second integratedspeakers 160 a and 160 b described with reference to FIG. 6 are coupledwith each other.

Further, an exemplary embodiment describes the first and second frontspeaker chambers 600 a and 600 b including the first and second frontspeakers 163 a and 163 b which output the audio signals in the middleand high-pitched tone band corresponding to the left channel and theright channel. However, an exemplary embodiment is not limited thereto.The first and second front speaker chambers 600 a and 600 b may furtherinclude the duct 630 and the tweeter 650. In this case, the audiosignals having the expanded low-pitched tone band and high-pitched toneband in connection with the audio signals in the middle and high-pitchedtone band corresponding to the left channel and the right channel may beoutput.

FIG. 18 is a diagram of the integrated speaker through which the audiosignals in the middle and low-pitched tone band and the low-pitched toneband are output, in the display apparatus according to another exemplaryembodiment.

As illustrated in FIG. 18, according to an exemplary embodiment, theintegrated speaker 160 which outputs the audio signals in the middle andlow-pitched tone band and the low-pitched tone band corresponding to theleft channel or the right channel includes the woofer chamber 500 andthe front speaker chamber 600. As described above, the woofer chamber500 is the area in which the woofer speaker 161 which outputs the audiosignal in the low-pitched tone band is mounted and the front speakerchamber 600 is the area in which the front speaker 163 which outputs theaudio signal in the middle and high-pictured tone band of the leftchannel or the right channel is mounted.

Similar to FIG. 6, the woofer chamber 500 in FIG. 18 may be partitionedinto the back chamber 510 in which the woofer device 511 is formed andthe front chamber 520 in which the duct 521 is formed. Further, thefront speaker 163 which is formed in the front speaker chamber 600 ofthe integrated speaker 160 to output the audio signal in the middle andhigh-pitched tone band corresponding to the left channel or the rightchannel may output the audio signal in the middle and high-pitched toneband corresponding to the left channel or the right channel through Nspeaker devices 620-1 to 620-N. The N speaker devices 620 may be anyinteger number greater than one.

As illustrated in FIG. 18, the front speaker 163 which outputs the audiosignal in the middle and high-pitched tone band corresponding to theleft channel or the right channel may include first to fourth speakerdevices 620-1 to 620-4. In this case, the front speaker 163 may outputthe audio in the middle and high-pitched tone band as the volume moreexpanded than the size of volume of the audio in the middle andhigh-pitched tone band output through the single speaker device 620 Thatis, according to an exemplary embodiment, to expand the volume of theaudio in the middle and high-pitched tone band corresponding to the leftchannel or the right channel, the number of speaker devices 620proportional to the expanded size of the corresponding volume may beformed in the front speaker 163.

As set forth above, according to one or more exemplary embodiments, thespeaker applied to the display apparatus may be configured into one tooutput the multi-channel audio signals. Further, according to exemplaryembodiments, the multi-channel audio signals may be output through thesingle speaker to be able to provide high-quality sound without the lowband loss, regardless of the listening position of the user and thedistance between the display apparatus and the back wall.

Although exemplary embodiments have been disclosed for illustrativepurposes, those skilled in the art will appreciate that variousmodifications, additions and substitutions are possible. Accordingly,such modifications, additions and substitutions should be understood tofall within the scope of the present disclosure.

The invention claimed is:
 1. A display apparatus, comprising: a display;and a first integrated speaker and a second integrated speaker which aredisposed in a lower region of the display and output an audio signal,wherein each of the first integrated speaker and the second integratedspeaker comprises: a first speaker region comprising: a first speakerwhich outputs a middle-range band of the audio signal, and a secondspeaker which outputs a high-range band of the audio signal; and asecond speaker region comprising a third speaker which outputs alow-range band of the audio signal, the third speaker being disposed inan upper region of the first speaker region, wherein the first speakerregion is formed in a sealed type enclosure, and wherein the secondspeaker region is formed in a bandpass type enclosure.
 2. The displayapparatus as claimed in claim 1, wherein the second speaker regioncomprises: a duct which is disposed on a side of the first speakerregion in a region below the third speaker and amplifies the low-rangeband of the audio signal output from the third speaker; a back chamberin which the third speaker is disposed; and a front chamber which isconnected to the back chamber and in which the duct is disposed.
 3. Thedisplay apparatus as claimed in claim 1, wherein the first speaker is amiddle-range speaker and the second speaker is a tweeter that isdisposed side by side with the first speaker.
 4. The display apparatusas claimed in claim 1, wherein the first integrated speaker is disposedin a lower left portion of the display apparatus and the secondintegrated speaker is disposed in a lower right portion of the displayapparatus.
 5. The display apparatus as claimed in claim 1, wherein thefirst integrated speaker and the second integrated speaker output theaudio signal in a downward direction of the display apparatus.
 6. Thedisplay apparatus as claimed in claim 2, wherein the third speaker is awoofer device.
 7. The display apparatus as claimed in claim 6, whereinthe duct resonates an acoustic of a woofer sound output from the wooferdevice.
 8. The display apparatus as claimed in claim 1, wherein thethird speaker is disposed above the first speaker region in a verticaldirection.